Method
- Make the pink sauce first: whisk ketchup, sweet chili sauce, miso, sugar, soy and rice vinegar with 100ml water in a small pot. Simmer 4 minutes until thickened slightly. Cool.
- Whisk sweet potato starch, rice flour, water and salt in a bowl until smooth and lump-free. The batter should be thin, like single cream.
- Heat 1.5 tbsp oil in a wide non-stick pan or flat griddle over medium-high heat.
- Pour half the starch batter into the pan, tilting to spread thinly. Almost immediately drop half the oysters across the surface, then half the chopped tong hao.
- Pour half the beaten egg over the top in a spiral. Let the bottom set and turn translucent — about 90 seconds. The starch will turn from cloudy white to translucent grey.
- Add half the bean sprouts on top. Flip with a wide spatula (or do a half-flip, folding one half over). Cook another 60 seconds. Slide onto a plate. Drizzle generously with the pink sauce. Repeat for the second omelette.
Common questions
Can Oyster Omelette be made ahead?
Oyster Omelette is best made and eaten the same day, but the components can be prepped earlier — chop and measure the ingredients up to a day ahead, refrigerated separately. Final cooking takes about 8 minutes.
Is Oyster Omelette spicy?
Oyster Omelette as written is mild to mildly warming — the heat comes from aromatics rather than chili. Add fresh sliced chili or chili oil at the end if you'd like to push it spicier.
Is Oyster Omelette vegetarian or gluten-free?
This recipe is suitable for most diets. If you have specific restrictions, the substitutions section in each ingredient note covers the most common swaps.
How hard is Oyster Omelette to make at home?
Oyster Omelette sits at intermediate difficulty — total time about 23 minutes. The ingredients are not unusual but the timing requires attention.
Can Oyster Omelette be scaled up or down?
This recipe is written for 2 servings. To scale, multiply each ingredient proportionally; the cooking times stay the same up to about double the volume. Beyond that, expect to cook in batches because of pan size and heat distribution.
Cultural Note
Oyster omelette is Taiwan's defining night-market dish — surveys consistently rank it as the most-ordered item across Shilin, Raohe, Liuhe and other major night markets. The dish has Fujian-Hokkien origins (Fujianese oyster omelette is similar but uses different greens) but the Taiwan version with chrysanthemum greens and the sweet pink sauce is distinctly local. The use of sweet potato starch (rather than wheat starch) is the technical signature; it produces the characteristic translucent gel texture that distinguishes Taiwanese o-a-tsian from Chinese hao jian.
